Multiple fuse.



L. B. BENNETT.

MULTIPLE FUSE.

APPLICATION FILED MAR. 26,1917. I 1 ,266,095. Patented May 14, 1918.

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,UNITED STATES PATENT OFFICE.

LOUIS B. BENNETT, or DETROIT, mrcmesn, AssIGNon v'ro FLORENCE MAY ECKMAN,

or DETROIT, MICHIGAN. Y

MULTIPLE FUSE.

Application filed March 26, 1917.

To all whom it may concern:

Be 'it known that I, LOUIS B. BENNETT, a citizen of the United States of'America, residing at Detroit, in the county of Wayne and State of -Michigan, have invented certain new and useful Improvements in Multiple Fuses, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to fuse fittings of that type in which the fuse is mounted in a screw-plug engageable with a socket fitting in the electric circuit. It is the object of the invention to obtain a construction in which a multiple fuse element is detachably mounted in the plug so as to be replaceable and also adjustable for the successive inclusion ofthe fuses in circuit. To this end the invention comprises the novel construction as hereinafter set forth.

In the drawings:

Figure 1 is a vertical central section through the fitting;

Fig. 2 is a section at right angles to Fig. 1;

Fig. 3 is a perspective view of the plug casing;

Fig. 4 is a perspective view of the unit detached therefrom.

A is a screw-threaded contact member, and B is a central contact member of a plug fitting, said contacts being mechanically secured, and suitable plastic insulator C. Dis a casing projecting outward from the contact 1. which is preferably formed of insulating material and is provided with parallel sides between which may be inserted the detachable multiple fuse element E. The latter is formed of suitable insulating material, be-

ing provided with a central metallic contact F and a series of contacts G arranged around the periphery thereof. These contacts are preferably in peripheral notches in the insulating material so as to be separated and insulated from each other. -H are fuses, which extend radially from the contacts G to the central contact member F, being preferably connected thereto by soldering. The

assembly of the parts E, F, G and H may be Y accomplished in various ways obvious to those skilled in the art. as for example by forming the member E in two halves be tween which the fuse membersH are engaged,the extremities of said members projecting and being soldered or otherwise elecv Specification of Letters Patent.

insulated from each other by a- Patent-ed May 14, 1918;

Serial No. 157mg.

trically connected to the parts F and G. I

is a thumb-screw which passes centrally through one of the sides of the casing D and engages a threaded'aperture in the central contact F. This screw serves to retain the member E in engagement with the casing and also draws the contact member F into contact with a member J which forms an electricalconnecti'on between the same and the outer or screw-threaded contactmemher A. K isa contact member within the hollow plug which is electrically connected with the contact member B and extends'to engage one of the peripheral notches in the member E and to form electrical connection. with the contact G therein.

\Vith the construction as described, when i i member E one notch, which will bring into circuit another fuse, and this adjustment can be made from time to time until all of the fuses are destroyed. The member '11 may then be removed by disengaging the thumbscrew .1 and a new unit E inserted in'place thereof and secured by said screw. Thus the only part to be renewed is the member E, which is comparatively simple and inexpensive in construction.

What I claim as my invention is 1. A multiple fuse, comprising a plug member having cooperating electrical contacts, a replaceable member detachably con nected to said plug member and provided with a central contact. a series of peripheral contacts and radial fuses extending therebetweemand means for detachablyconnecting said replaceable unit ,to said plug, forming electrical connection between one of the plug contacts and the central. contact of said replaceable member and a connection to the other of said plug contacts for successively engaging the peripheraljconta'cts of the replaceablemember in different positions of-rotative adjustment thereof."

' 2. In a multiple fuse, the combination gaging contacts,

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tachably mounted in said plug and provided with a central contact, a series of peripheral contacts amtrmlial "fuses therebetween, a contact nien'iber on said plug electrically connected with one of socket-engaging contacts and successively engaging the peripheral contacts on the replaceable member in different positions or". rotati've adjustment thereof, and an electrical connection between the central contact of said replaceable member and the other of said socket-engaging contacts 3. In a multiple fuse the con'ibiz'iation with a plug member provided with socketengaging contacts, 01. a replaceable unit le tachabl' mountml in saitl plug member, comprising a peripherally-noteherl, centrallyapertured insulator body, a contact member in said central aperture, a series of contacts respectively in the peripheral notches and radial fuses therebetween, means for forming electrical connection between one of saiol socket-engaging contacts and the central contact of saicl replaceable member, and a member connected to the other of saul socket-engaging contacts for successively engaging said peripheral notches and the contact members therein.

l. A multiple fuse corrnprisin5; a plug member provided with socket-engaging con tacts, replaceable unit rotativel; mounted on said plug on an axis transverse to the axis of the plug, said unit comprising a peripherally notchecb centrally apertnrecl insulator botly a contact in the central aperture thereof, a series 0;? contacts in the 1,2se,ces

peripheral notches and radial fuses tlxerebetween a clamping screw for securing the central contact of saitl replaceable member to said plug member anil'ifor forming electrical connection to one of said socket-engaging contacts, and a member arranged to successively engage the peripheral notches of saicl replaceable n'iember constituting an electrical connection between the contacts in said notches and tlie other of said socketengaging contacts and also yieldably retainingsaicl replaceable member in its a(l justecl position,

A multiple use comprising a plug member, having an insulator body and socket-engaging contacts monnteil thereon said insulator body being}; provided with out- Warclly extending parallel Walls, a replace able unit insertible between saii'l parallel walls comprising a peripherally-notched,

centrallyaperturetl insulator body, a series of contacts in the peripheral notches there of, a contact in the central aperture and radial fuses therebetween, a pin passing illllOll fll one of saitl Walls and engaging the central contact of saitl replaceable unit to retain the same and to establish electrical connection with one of socket-engaging contacts, and a Contact member arran rl Within said plug: for successively engaging the notches of saicl replaceable member and the contacts therein being connectetl to the other or" saicl socket-engaging contacts.

In testimony Wliereol: I ate): my signature. 

